Senior Software Engineer, Backend (OS)
SimSpace Corporation2 hours ago
Responsibilities
- Design, build, and operate production software in Go, Python, and Kotlin for attack and user emulation frameworks.
- Develop deep Windows and Linux integrations using native OS APIs, session management, process execution, and system facilities.
- Improve reliability, security, testability, and observability across message-driven architectures operating at scale.
- Build high-fidelity desktop and web automation, input simulation, privilege-boundary handling, and realistic user timing.
- Collaborate with backend, security, and AI engineering teams to define reusable primitives and APIs.
- Conduct code and design reviews, mentor team members, and improve platform-level engineering practices.
Requirements
- 6+ years of hands-on software engineering experience delivering and operating production software.
- Deep practical Windows or Linux systems-development experience below application-level abstractions, such as native APIs, process and session management, eBPF, IPC, or security contexts.
- Strong proficiency in Go, or demonstrated expertise in another systems language with the ability to become productive in Go quickly.
- Experience with JVM languages such as Kotlin or Java and message-driven asynchronous architectures.
- Ability to reason about complex OS failure modes, fidelity-versus-complexity trade-offs, and distributed-system stability.
- Preferred qualifications include experience building endpoint, monitoring, remote-management, or EDR/security agents; desktop or browser automation; accessibility APIs; computer vision; hypervisors; VDI; endpoint security telemetry; adversary emulation; or AI-agent tool integration.
Benefits
- Base monthly pay range of 1,500,000 CRC to 2,500,000 CRC, with potential annual performance bonuses and equity stock options.
- Private medical, dental, vision, and life benefits.
- Company-paid mental health counseling, coaching, and family resources through Spring Health.
- Paid parental leave.
- LinkedIn Learning membership and access to in-house and external learning opportunities, conferences, and industry events.
- Monthly reimbursements for teammate connections through the SocialSpace Community.
- Remote or office-based work options with collaboration across departments and time zones.
About SimSpace Corporation
SimSpace builds cyber ranges and a live-fire simulation platform used by governments, militaries, and large enterprises to train cyber teams, validate defenses, and test AI agents. The company sells software and expert services for training, threat emulation, and technology evaluation in replicas of production environments. Founded in 2015 by veterans of U.S. Cyber Command and MIT Lincoln Laboratory, SimSpace is privately held and headquartered in Orlando, Florida.